Pima County, Arizona Water Systems

Pima County, Arizona

236 community water systems on record — 143 active, 93 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.

Community water systems in Pima County, Arizona

System name	Mailing city	Population served	Status
TUCSON CITY OF	—	732,906	Active
METROPOLITAN DWID	TUCSON	45,570	Active
ORO VALLEY WATER UTILITY	ORO VALLEY	42,316	Active
COMMUNITY WC OF GREEN VALLEY	GREEN VALLEY	22,085	Active
USAF DAVIS MONTHAN AFB	DAVIS-MONTHAN AFB	18,640	Active
SAHUARITA WATER COMPANY	SAHUARITA	18,178	Active
VAIL WATER COMPANY	VAIL	17,500	Active
FLOWING WELLS IRRIGATION DISTRICT	TUCSON	16,000	Active
MARANA MUNICIPAL - MARANA	MARANA	15,162	Active
ORO VALLEY WATER-R V DIVI	ORO VALLEY	11,138	Inactive
TUCSON WATER CORONA DE TUCSON	—	10,217	Active
GREEN VALLEY DWID	GREEN VALLEY	8,687	Active
QUAIL CREEK WATER COMPANY	TUCSON	6,812	Active
AVRA WATER COOP INC	TUCSON	6,685	Active
GW FARMERS WATER CO - CONTINENTAL	MARICOPA	5,592	Active
METROPOLITAN DWID - DIABLO VILLAGE	TUCSON	5,542	Active
MARANA MUNICIPAL - PICTURE ROCKS	TUCSON	5,278	Active
MARANA MUNICIPAL - HARTMAN VISTAS	TUCSON	5,248	Active
MARANA MUNICIPAL - AIRLINE LAMBERT	TUCSON	4,568	Active
ORO VALLEY WATER COUNTRYSIDE	ORO VALLEY	4,534	Active
ADOC TUCSON	TUCSON	4,500	Active
RAY WATER COMPANY INC	TUCSON	4,495	Active
METROPOLITAN DWID - HUB	TUCSON	4,252	Active
LAGO DEL ORO WATER CO	TUCSON	4,170	Inactive
GW FARMERS WATER CO - SANTA RITA SPRINGS	MARICOPA	3,990	Active
SPANISH TRAIL WATER COMPANY	TUCSON	3,822	Active
GW SAGUARO DIST WATER CO - LAS QUINTAS	MARICOPA	3,720	Active
SILVER SHADOWS WATER COMPANY	TUCSON	3,245	Inactive
SAGUARO WATER COMPANY	—	3,243	Active
VOYAGER WATER COMPANY	TUCSON	3,209	Active
GW OCOTILLO WATER - RANCHO DEL SOL LINDO	MARICOPA	3,128	Active
AJO IMPROVEMENT COMPANY	AJO	2,654	Active
CS LOS CERROS WATER COMPANY INC	DES PERES	2,613	Active
ARIZONA WATER CO - AJO	PHOENIX	2,100	Active
MARANA DWID - DERRINGER	MARANA	1,950	Active
GW OCOTILLO WATER - CATALINA	MARICOPA	1,168	Active
49ER WATER COMPANY	RANCHO SANTE FE	1,050	Inactive
TOWN & COUNTRY ESTATES	FARMINGTON HILLS	960	Active
RINCON COUNTRY EAST RV PARK	TUCSON	912	Active
RANCHO DEL CONEJO COMM WATER COOP	TUCSON	900	Active
METROPOLITAN DWID - E&T SYSTEM	TUCSON	880	Active
FAR HORIZONS EAST MHP	TUCSON	870	Active
SANDARIO WATER COMPANY	GLENDALE	870	Active
NEW PUEBLO WATER COMPANY	GREEN VALLEY	850	Inactive
TUCSON WATER DEPT	TUCSON	786	Inactive
ORGAN PIPE NM HEADQUARTERS	AJO	755	Active
MARANA MUNICIPAL - SILVERBELL GATEWAY	MARANA	750	Active
LAKEWOOD ESTATES WATER COMPANY	—	722	Active
MISSION PALMS APARTMENTS	TUCSON	720	Active
MARANA DWID - CULVER	MARANA	709	Active
GW OCOTILLO WATER - DIAMOND BELL	MARICOPA	706	Active
WINTERHAVEN WATER DEVELOPMENT	TUCSON	685	Active
TUCSON MEADOWS M H PARK	TUCSON	650	Inactive
MARANA MUNICIPAL	TUCSON	630	Inactive
LA CASITA WATER COMPANY 3	TUCSON	605	Active
TUCSON WATER DEPT	TUCSON	583	Inactive
ANWAY MANVILLE WATER COMPANY	TUCSON	576	Active
VISTA DEL NORTE MHP	TUCSON	554	Active
TRAILS WEST MHP	TUCSON	500	Active
GW OCOTILLO WATER - VALLEY VIEW ACRES	MARICOPA	496	Active
GW FARMERS WATER CO - SAHUARITA	MARICOPA	492	Active
GW FARMERS WATER CO - SAHUARITA HIGHLAND	MARICOPA	492	Active
ACACIA GARDENS MOBILE HO	TUCSON	450	Inactive
CAMPBELL ESTATES MHP	TUCSON	450	Active
THIM UTILITY COMPANY 2	TUCSON	445	Active
CACTUS COUNTRY RV RESORT	TUCSON	420	Active
AJO DWID	AJO	405	Active
WHY DWID	AJO	400	Active
DIAMOND GROVE MOBILE HOME ESTATES	TUCSON	385	Active
RINCON RANCH ESTATES WATER CO.	TUCSON	375	Inactive
LAZY C WATER SERVICE	—	359	Active
FEDERAL CORRECTIONAL INST	TUCSON	350	Active
BELLA CAPRI MHP	TUCSON	342	Active
THIM UTILITY COMPANY	TUCSON	310	Active
SHILOH WATER COMPANY	SAHUARITA	309	Active
LOS ARBOLES MOBILE HOME PARK	TUCSON	303	Active
VALLE VERDE DEL NORTE	TUCSON	300	Active
MESALAND WATER COMPANY	TUCSON	294	Active
MT LEMMON DWID	TUCSON	290	Active
RIO VIEJO WATER	TUCSON	272	Active
RIO MERCADO WATER	TUCSON	266	Active
TIERRA LINDA HOA WATER COMPANY	—	266	Active
GW OCOTILLO WATER - SILVERBELL WEST	MARICOPA	263	Active
LA CASITA WATER COMPANY 2	TUCSON	261	Active
FAR HORIZONS MHP	TUCSON	258	Active
SIERRITA MOUNTAIN WATER COOP	TUCSON	258	Active
GW SAGUARO DIST WATER CO - TALA WAY	MARICOPA	255	Active
THIM UTILITY COMPANY - WELL 9	TUCSON	254	Active
HELMET PEAK WATER RES ASN	SAHUARITA	250	Inactive
LA CHOLLA AIRPARK	ORO VALLEY	250	Active
THIM WATER COMPANY 2	TUCSON	247	Active
GW SAGUARO DIST WATER CO - RINCON	PHOENIX	232	Active
MARANA MUNICIPAL- LA PUERTA	TUCSON	226	Inactive
RANCHWOOD COMMUNITY	PHOENIX	225	Active
DESERT SHORES RV MHP	TUCSON	220	Active
MARANA DWID-HUNTER/IM	MARANA	218	Inactive
RIO VISTA MOBILE HOME PARK	TUCSON	217	Active
HALCYON ACRES WATER USERS ASSOCIATION	TUCSON	215	Active
CRESCENT MANOR MHP	TUCSON	200	Active
MARANA MUNICIPAL - TORTOLITA MOUNTAIN	MARANA	200	Active
ZIMMERMAN ENTERPRISES	MT. LEMMON	200	Inactive
GW SAGUARO DIST WATER CO - MIRABELL	MARICOPA	180	Active
PARK MANOR MOBILE HOME PK	TUCSON	180	Inactive
GW OCOTILLO WATER - THUNDERHEAD	MARICOPA	174	Active
LA CASITA WATER COMPANY 1	TUCSON	174	Active
SILVER CHOLLA LLC	CHANDLER	168	Active
CASITAS DE CASTILIAN	TUCSON	167	Active
RILLITO WATER USERS ASSOC	RILLITO	165	Active
HALCYON ACRES 2	TUCSON	164	Active
WILDFLOWER WATER COOP	TUCSON	157	Active
PANTANO WATER COOP	VAIL	156	Active
VIA VERDE WEST MHP	TUCSON	156	Active
ARIVACA TOWNSITE WATER COOP	ARIVACA	150	Active
DESERT WATER COOP	TUCSON	150	Active
FOOTHILLS MOBILE HM PARK	TUCSON	150	Inactive
NORTH LA CHOLLA MHP	TUCSON	150	Active
SAMALAYUCA IMPROVEMENT ASSOC	TUCSON	150	Active
SU CASA MHP	TUCSON	150	Inactive
RAINDANCE WATER COOP	TUCSON	148	Active
SILVER SHADOWS WATER CO	TUCSON	138	Inactive
ORCHARD VALLEY MOBILE HOME PARK	TUCSON	130	Active
RANCHO TIERRA BLANCA POA	MARANA	126	Active
SANDIA WATER COMPANY	TUCSON	121	Inactive
LOS RANCHITOS WELL	TUCSON	119	Inactive
MARANA MUNICIPAL - PALO VERDE	TUCSON	118	Active
GW SAGUARO DIST WATER CO - LYN LEE	MARICOPA	114	Active
MOBILE HOME PROPERTIES	TUCSON	114	Active
GW SAGUARO DIST WATER CO - AMBER ANN	MARICOPA	108	Active
CATALINA VILLAGE	TUCSON	107	Active
THIM UTILITY COMPANY - RANCHO VISTA	TUCSON	105	Active
LOGAN HILLS WATER CO	TUCSON	102	Inactive
ADOBE MANOR MOBILE HOME P	TUCSON	100	Inactive
ARIZONA MOTEL	TUCSON	100	Inactive
CATALINA VISTA MHP	TUCSON	100	Inactive
CROSSROADS PARK MHP	TUCSON	100	Active
MT LEMMON WATER COOP	TUCSON	100	Inactive
THIM UTILITY COMPANY	TUCSON	100	Inactive
KAHLUA WELL COOP	VAIL	99	Active
SAHUARITA VILLAGE WATER COMPANY	SAHUARITA	93	Active
DESERT PARADISE MHP LLC	AMADO	90	Active
GW OCOTILLO WATER - SIERRITA FOOTHILLS	MARICOPA	84	Active
WELLS FARGO WATER COMPANY	TUCSON	83	Active
CATALINA COUNTRY ESTATES	TUCSON	77	Active
METROPOLITAN DWID - LAZY B	TUCSON	77	Active
LAZY ACRES MHP	TUCSON	75	Active
RINCON MESA LANDOWNERS	VAIL	75	Active
RIVERSIDE APARTMENTS	TUCSON	75	Active
CAROLANNE DRIVE HOA	TUCSON	72	Active
HIGH CHAPARRAL WATER COOP	TUCSON	72	Active
GW SAGUARO DIST WATER CO - TORTOLITA	MARICOPA	69	Active
THIM UTILITY COMPANY - PARKIN	TUCSON	69	Active
LA SIERRA TRAILER PARK	TUCSON	65	Inactive
POCKETKNIFE WATER COOP	VAIL	65	Active
CAMMIES FOOTHILLS VISTA MHC	TUCSON	62	Active
WORDEN WATER COMPANY	TWIN LAKE	60	Active
KINO MOBILE HOME PARK	TUCSON	56	Inactive
RANCHO SIERRITA WELL ASSOC	TUCSON	55	Active
PITA WATER COMPANY	AMADO	54	Active
SHAE WATER COMPANY	AMADO	54	Active
SUMMIT WATER COOP	TUCSON	53	Active
EL PAIS MOTEL & TRAILER CT SYS	TUCSON	52	Inactive
WILDCAT ONE WELL COOP	VAIL	52	Active
SIERRA COURT MHC LLC	TUCSON	51	Active
FOOTHILLS WATER CO PUSCH RIDGE	TUCSON	50	Inactive
SANTA RITA HEIGHTS MHP	GARDEN CITY	50	Active
PICO VISTA COMMUNITY WELL	TUCSON	49	Active
EL PASO NATL GAS-GILA COMP STA	TUCSON	45	Inactive
KLAFTER WELL COOP	TUCSON	45	Active
SUPERSTITION WATER COOP	TUCSON	45	Active
THIM UTILITY WELL #1	TUCSON	45	Inactive
TOWN OF MARANA - PICTURE ROCK 2	TUCSON	45	Inactive
FREEWAY TRAILER COURT	TUCSON	42	Inactive
SASABE BORDER VILLAGE	SASABE	42	Active
GARIGANS GULCH WATER COOP	VAIL	35	Active
THIM UTILITY COMPANY	TUCSON	35	Inactive
SNYDER HILL WELL USERS	TUCSON	33	Inactive
LAZY A MOBILE HOME PARK	TUCSON	32	Inactive
BARRENT BIESEMEYER WATER SYS	TUCSON	30	Inactive
CORONADO FOREST DRIVE WATER COOP	TUCSON	30	Active
MOUNTAINAIRE WATER CO.	TUCSON	30	Inactive
WILMOT WATER USERS GROUP	TUCSON	30	Active
GATOR WATER COMPANY	TUCSON	29	Active
SIETE CASAS JOINT VENTURE	TUCSON	25	Active
SANDARIO WELL 3	TUCSON	24	Inactive
VAN BUREN WELL COOP	TUCSON	24	Inactive
MIDVALE FARMS WATER COMPA	BAD ADDRESS	23	Inactive
VAL VERDE INC	GREEN VALLEY	23	Inactive
ZOO STAGE WATER CO-OP, INC	TUCSON	23	Inactive
SUMMIT WATER COMPANY	GREEN VALLEY	22	Inactive
LIQUID ROCK WATER ASSOCIATION	VAIL	21	Inactive
HOMEOWNERS COOP	TUCSON	20	Inactive
DEEP WELL COOP	TUCSON	17	Inactive
TANGERINE WATER GROUP	MARANA	14	Inactive
THREE POINTS	TUCSON	11	Inactive
MARANA CORRECTIONAL FACILITY	PHOENIX	7	Inactive
BOYE CLARK TRAILER PARK	TUCSON	1	Inactive
CATALINA MOUNTAIN SCHOOL	TUCSON	1	Inactive
GEM OF THE DESERT TRAILER PARK	TUCSON	1	Inactive
HERB,KEN TRAILER COURT	GREEN VALLEY	1	Inactive
METRO WATER CO SYS 1 CASA ADO#	TUCSON	1	Inactive

Showing the 200 largest of 236 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.